| 摘要 |
PROBLEM TO BE SOLVED: To supervise the failure state of a relay module at a base station by making a relay module detect self failure separately and notifying a failure state of the relay module to the base station with a relay interface device. SOLUTION: A failure supervising part which is applied to a radio wave relaying device is connected to a distributed antenna interface DAI 130. The failure supervising part is controlled by a microcontroller, sequentially designates a dispersive device, sends a state inquiry message to the failure detecting part and notifies a failure state to a base station 100 according to state information of a response message to be received. Also, a failure detecting part is provided to dispersive devices 300A1, 300A2, 300B1 and 300B2 one each. It is controlled by the microcontroller, detects the existence of a failure of self-dispersive device in response to the state inquiry message from the failure supervising part which designates self-dispersive device and sends the state information by a response message to the failure supervising part. |
